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a9d5a99568
This change should move us forward toward emoji support, as we are no longer limited by our own OpenType implementation, which was failing to parse the TrueType Collection format used to store emoji fonts (at least on macOS).
61 lines
2.3 KiB
C++
61 lines
2.3 KiB
C++
/*
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* Copyright (c) 2022, the SerenityOS developers.
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* Copyright (c) 2023, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/HashMap.h>
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#include <LibGfx/Bitmap.h>
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#include <LibGfx/Font/Font.h>
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#include <LibGfx/Font/Typeface.h>
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class SkFont;
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namespace Gfx {
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class ScaledFont final : public Gfx::Font {
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public:
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ScaledFont(NonnullRefPtr<Typeface>, float point_width, float point_height, unsigned dpi_x = DEFAULT_DPI, unsigned dpi_y = DEFAULT_DPI);
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ScaledFontMetrics metrics() const;
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// ^Gfx::Font
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virtual float point_size() const override;
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virtual float pixel_size() const override;
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virtual int pixel_size_rounded_up() const override;
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virtual Gfx::FontPixelMetrics pixel_metrics() const override;
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virtual u8 slope() const override { return m_typeface->slope(); }
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virtual u16 weight() const override { return m_typeface->weight(); }
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virtual bool contains_glyph(u32 code_point) const override { return m_typeface->glyph_id_for_code_point(code_point) > 0; }
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virtual float glyph_width(u32 code_point) const override;
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virtual float glyph_or_emoji_width(Utf8CodePointIterator&) const override;
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virtual u32 glyph_id_for_code_point(u32 code_point) const override { return m_typeface->glyph_id_for_code_point(code_point); }
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virtual float preferred_line_height() const override { return metrics().height() + metrics().line_gap; }
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virtual int x_height() const override { return m_point_height; } // FIXME: Read from font
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virtual u8 baseline() const override { return m_point_height; } // FIXME: Read from font
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virtual float width(StringView) const override;
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virtual float width(Utf8View const&) const override;
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virtual String family() const override { return m_typeface->family(); }
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virtual NonnullRefPtr<ScaledFont> scaled_with_size(float point_size) const;
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virtual NonnullRefPtr<Font> with_size(float point_size) const override;
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virtual Typeface const& typeface() const override { return m_typeface; }
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SkFont skia_font(float scale) const;
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private:
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NonnullRefPtr<Typeface> m_typeface;
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float m_x_scale { 0.0f };
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float m_y_scale { 0.0f };
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float m_point_width { 0.0f };
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float m_point_height { 0.0f };
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Gfx::FontPixelMetrics m_pixel_metrics;
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float m_pixel_size { 0.0f };
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int m_pixel_size_rounded_up { 0 };
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};
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}
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